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51+ privacy-first developer tools. No uploads, no tracking. everything runs in your browser.

Popular tools

JSON Formatter / Minifier

Pretty-print or minify JSON. Formats, validates, and catches syntax errors. All processing happens locally.

Base64 Encode / Decode

Encode text to Base64 or decode Base64 back to text. Supports standard and URL-safe variants. Processed entirely in your browser.

Text or Base64 → Base64 or Text

Password Generator

Generate strong random passwords with configurable length and character sets. Uses the browser's cryptographically secure RNG.

— → Passwords

Image Compressor

Minify JPEG and WebP images by re-encoding at a lower quality. PNG is re-encoded losslessly to strip metadata. Keeps the original format. All processing happens locally.

PNG / JPEG / WebP → Same format (minified)

QR Code Generator

Generate QR codes from any text or URL. Download as SVG and embed anywhere. All generation happens in your browser.

Text or URL → SVG image

Diff Checker

Compare two texts line by line. See added, removed, and unchanged lines with unified diff output. Download a .diff patch file. All processing happens locally.

Two texts → Unified diff

UUID Generator

Generate random UUIDs (v4) in bulk using the browser's cryptographically secure RNG. Processed entirely in your browser.

— → UUIDs

URL Encode / Decode

Percent-encode text for URLs, or decode percent-encoded strings back to plain text. Leaves forward slashes unencoded for path use.

Text → Encoded/Decoded text

PDF to Text

Extract plain text from a PDF. All processing happens locally in your browser.

PDF → Plain text

Hash Calculator

Compute MD5, SHA-1, SHA-224, SHA-256, SHA-384, and SHA-512 hashes from any text. All computation happens in your browser.

Text → Hash hex string

Regex Tester

Test regular expressions against a string and see all matches with captured groups. Uses Rust regex syntax (no backreferences or lookaround).

Pattern + test text → Match results

Word Counter

Count words, characters, sentences, and paragraphs in real time. See reading time, speaking time, and top keyword frequency. All processing happens locally.

Text → Word statistics

Privacy first

Your files never leave your device. All processing happens locally in your browser.

No installs

Nothing to download. Open the site, use the tool, close the tab. Works on any device.

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